Mean Differences and Percent Change by Treatment Group at 4 and 12 Monthsa.

Abbreviations: SI, NIDA's Standard Intervention; WWE, SI plus Well Woman Exam; 4ES, SI, WWE plus four educational sessions.aValues represent differences and percentage change (parentheses) within groups from baseline. Due to rounding, calculations may not exactly reflect data from Table 1.bNumber of occasions used cocaine (number of days used * times per day); negative number indicates improvement.cNumber of episodes used cocaine per day; negative number indicates improvement.dNumber of days free from cocaine; positive number indicates improvement.eNumber of negative urine tests; positive number indicates improvement. We examined baseline and incremental data, but did not perform an incremental cost-effectiveness analysis on this outcome due to missing data.fProportion of participants abstaining from cocaine, past 30 days; positive number indicates improvement.gProportion of participants abstaining from cocaine, past 4 months; positive number indicates improvement.hTotal number of alcoholic drinks, past 7 days; negative number indicates improvement.iMean number of alcoholic drinks per day, of the days participants drank alcohol, past 7 days; negative number indicates improvement.jProportion of participants avoiding heavy drinking, past 7 days; “Heavy drinking” defined as ≥4 drinks per day of the days participants drank alcohol; positive number indicates improvement.kProportion of participants abstaining from alcohol, past 30 days; positive number indicates improvement.